Meaning of "put someone off (something)" in Essential American English Dictionary

put someone off (something)

phrasal verb with put us /pʊt/ verb present participle putting, past tense and past participle put

to make someone not like someone or something, or not want to do something:

Jan was talking about her operation and it put me off my food.

(Definition of “put someone off (something)” from the Webster's Essential Mini Dictionary © Cambridge University Press)